Which Door Viewer Material is Better?

What is a Door Viewer?

A door viewer, commonly known as a peephole, is a small optical device installed in a door that allows you to see who is on the other side without opening the door. It’s a basic but essential component in home and commercial security.

Key Features to Consider When Choosing a Door Viewer

Material of the Body
Viewing Angle
Lens Material
Installation Diameter & Door Thickness

Material Comparison: Stainless Steel vs Brass vs Zinc Alloy

Stainless Steel Door Viewer

- - ✅ Corrosion-resistant and durable
  - ✅ Ideal for coastal or humid environments
  - ✅ High-end appearance and solid feel
  - ❗ Usually higher cost

Brass Door Viewer

- - ✅ Excellent mechanical strength
  - ✅ Good anti-rust properties
  - ✅ Used widely in high-end security hardware
  - ❗ May oxidize over time without proper treatment

Zinc Alloy Door Viewer

- - ✅ Affordable price, widely used in residential projects
  - ✅ Acceptable appearance with plating
  - ❗ Weaker in corrosion resistance and long-term durability

Lens Material: Glass or Plastic?

Type	Pros	Cons
Glass Lens	Clearer image, scratch-resistant	Heavier, more costly
Plastic Lens	Lightweight, low cost	Prone to scratches, aging

Viewing Angle: Why It Matters

A typical door viewer offers a 160° to 220° viewing angle. The wider the angle, the larger the area you can monitor.

- - 160°: Basic viewing, suitable for narrow hallways
  - 200°+: Wide-angle, ideal for apartments or public access doors

Installation Diameter & Door Thickness

When choosing a door viewer, make sure it matches both the installation hole diameter and the door thickness.

Specification	Typical Range	Note
Hole Diameter	12mm – 16mm (Most common: 14mm)	Measure the diameter of the existing holes in the door before selection
Door Thickness	35mm – 55mm (Customizable for 25mm–80mm)	The thicker the door, the longer the thread length of the cat’s eye.

Conclusion: How to Choose the Right Door Viewer

Application Scenario	Recommended Material & Specs
High-end project / Villa	Stainless steel body + Glass lens + 200° wide view
General home use	Brass or zinc alloy + Glass/plastic lens
Cost-sensitive projects	Zinc alloy + Plastic lens + Standard angle (160°)

📌 Looking for a high-quality stainless steel door viewer with customizable sizes and finishes? Contact us today – we are a professional manufacturing factory with strong OEM capability.

MARCHRY HARDWARE

WEBSITE: www.marchry.com

MAIN PRODUCTS: Door handle, Door knob, Pull handle, Door stopper, Door lock, Toilet partition hardware, Furniture handle, etc.

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